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Finding the Fourth Proportional to 351,705.48, 485,085.74 and 302,730.44

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Solution

The fourth proportional to 351,705.48, 485,085.74 and 302,730.44 is: 417,537.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,705.48 : 485,085.74 = 302,730.44 : x
  2. Step 2: Convert to fraction form
    351,705.48/485,085.74 = 302,730.44/x
  3. Step 3: Cross multiply
    351,705.48x = 485,085.74 × 302,730.44
  4. Step 4: Simplify right side
    351,705.48x = 146,850,219,507.93
  5. Step 5: Solve for x
    x = 146,850,219,507.93/351,705.48
  6. Step 6: Final answer
    x = 417,537.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.